THE BEST SIDE OF SUBARU JDM ENGINE SWAP

k20a2/ k20a3 blocks Is there any big dif. amongst these two. I am conversing just the blocks. As in would a K20a2 block be described as a more sensible choice in sleeving around the A3? The A3 are so inexpensive to come back by so I just needed to know.Our shop has purchased four engines and 2 transmissions. Pretty good quality sections and brillia